134 



RECORDS OF THE AUSTRALIAN MUSEUM. 



is the only large face ; it is strongly striated parallel to its inter- 

 section with M (110), and gives a multiple and blurred image. 



I have adopted Dana's position and lettering, converting Gold- 

 schmidt's indices by the transformation equations, // = - /.', 

 ]^.' ^ Oh + k, I' --= I, where the dashed letters refer to Dana's 

 indices. A table showing the equivalent letters and indices 

 according to Dana and Goldschmidt respectively will be found 

 below, p. 137, under the description of axinite from Colebrook 

 Tasmania. 



The following table of angles is constructed from measurements 

 on the specimen shown in PI. xxix., fig. i (which gives the best 

 reflections), with the exception of the angles M A ~, ?^' A Y and 

 >(' A f] which were got from the crystal drawn in orthogonal 

 iind clinographic projection in PI. xxix., figs. 1 and 2. 



